Finding the Fourth Proportional to 13,188.53, 19,776.41 and 4,872.47

Step by Step Solution

1. Step 1: Write the proportion equation
   13,188.53 : 19,776.41 = 4,872.47 : x
2. Step 2: Convert to fraction form
   13,188.53/19,776.41 = 4,872.47/x
3. Step 3: Cross multiply
   13,188.53x = 19,776.41 × 4,872.47
4. Step 4: Simplify right side
   13,188.53x = 96,359,865.55
5. Step 5: Solve for x
   x = 96,359,865.55/13,188.53
6. Step 6: Final answer
   x = 7,306.34